Probing anomalous top-Higgs couplings at the HL-LHC via H→WW~* decay channels
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摘要
We study the prospects of probing the anomalous tHq(q=u,c)couplings via SS2L or 3L signatures at the High Luminosity(HL-LHC)run of the 14 Te V CERN collider.We focus on signals of the tH associated production followed by the decay modes t→b?~+ν_?and H→W W~*,and ■ production followed by the decay modes t→b?~+ν_?and■where?=e,μ.Based on two types of H→W W~*decay topologies,one assuming the semileptonic decay mode H→W W~*→?~+νjj and the other the fully leptonic decay mode■,we perform a full simulation for signals and backgrounds.It is shown that,at the future HL-LHC,the branching ratio Br(t→uh)(Br(t→ch))can be probed to 1.17(1.56)×10~(-3)for the same-sign di-lepton channel,and to7.1×10~(-4)(1.39×10~(-3))for the 3L channel at 3σsensitivity.
We study the prospects of probing the anomalous tHq(q=u,c)couplings via SS2L or 3L signatures at the High Luminosity(HL-LHC)run of the 14 Te V CERN collider.We focus on signals of the tH associated production followed by the decay modes t→b?~+ν_?and H→W W~*,and ■production followed by the decay modes t→b?~+ν_?and■where?=e,μ.Based on two types of H→W W~*decay topologies,one assuming the semileptonic decay mode H→W W~*→?~+νjj and the other the fully leptonic decay mode■,we perform a full simulation for signals and backgrounds.It is shown that,at the future HL-LHC,the branching ratio Br(t→uh)(Br(t→ch))can be probed to 1.17(1.56)×10~(-3)for the same-sign di-lepton channel,and to7.1×10~(-4)(1.39×10~(-3))for the 3L channel at 3σsensitivity.
We study the prospects of probing the anomalous tHq(q=u,c)couplings via SS2L or 3L signatures at the High Luminosity(HL-LHC)run of the 14 Te V CERN collider.We focus on signals of the tH associated production followed by the decay modes t→b?~+ν_?and H→W W~*,and ■production followed by the decay modes t→b?~+ν_?and■where?=e,μ.Based on two types of H→W W~*decay topologies,one assuming the semileptonic decay mode H→W W~*→?~+νjj and the other the fully leptonic decay mode■,we perform a full simulation for signals and backgrounds.It is shown that,at the future HL-LHC,the branching ratio Br(t→uh)(Br(t→ch))can be probed to 1.17(1.56)×10~(-3)for the same-sign di-lepton channel,and to7.1×10~(-4)(1.39×10~(-3))for the 3L channel at 3σsensitivity.
引文
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9 D.Lopez-Val,J.Guasch,and J.Sola,JHEP,0712:054(2007);W.Bernreuther,J.Phys.G,35:083001(2008);T.Han,Int.J.Mod.Phys.A,23:4107(2008);J.A.Aguilar-Saavedra,Nucl.Phys.B,812:181(2009);J.A.Aguilar-Saavedra,Nucl.Phys.B,821:215(2009)
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11 A.Kobakhidze,L.Wu,and J.Yue,JHEP,1410:100(2014);E.L.Berger,Q.-H.Cao,C.-R.Chen,C.S.Li,and H.Zhang,Phys.Rev.Lett.,106:201801(2011);D.Atwood,S.K.Gupta,and A.Soni,JHEP,1410:057(2014)
12 Y.Wang,F.P.Huang,C.S.Li,B.H.Li,D.Y.Shao,and J.Wang,Phys.Rev.D,86:094014(2012)
13 A.Greljo,J.F.Kamenik,and J.Kopp,JHEP,1407:046(2014)
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16 K.Chao,H.-Y.Cheng,W.-S.Hou,and J.Sayre,Phys.Lett.B,716:225(2012);C.Degrande,J.-M.Gerard,C.Grojean,F.Maltoni,and G.Servant,Phys.Lett.B,703:306(2011)
17 V.Khachatryan et al(CMS Collaboration),JHEP,1702:079(2017)
18 G.Aad et al(ATLAS Collaboration),JHEP,1512:061(2015)
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23 F.Larios,R.Martinez,and M.A.Perez,Phys.Rev.D,72:057504(2005)
24 ATLAS Collaboration,ATL-PHYS-PUB-2013-012;ATL-PHYS-PUB-2016-019
25 J.A.Aguilar-Saavedra,Acta Phys.Polon.B,35:2695(2004);J.M.Yang,Annals Phys.316:529(2005);F.Larios,R.Martinez,and M.A.Perez,Int.J.Mod.Phys.A,21:3473(2006);P.M.Ferreira,R.B.Guedes,and R.Santos,Phys.Rev.D,77:114008(2008)
26 N.Craig,J.A.Evans,R.Gray et al,Phys.Rev.D,86:075002(2012)
27 C.Degrande,F.Maltoni,J.Wang,and C.Zhang,Phys.Rev.D,91:034024(2015);G.Durieux,F.Maltoni,and C.Zhang,Phys.Rev.D,91:074017(2015);V.Cirigliano,W.Dekens,J.de Vries,and E.Mereghetti,Phys.Rev.D,94:034031(2016)
28 Y.-B.Liu and Z.-J.Xiao,Phys.Lett.B,763:(2016)458.
29 Y.-B.Liu and Z.-J.Xiao,Phys.Rev.D,94:054018(2016)
30 Lei Wu,JHEP,1502:061(2015)
31 W.Liu,H.Sun,X.Wang,and X.Luo,Phys.Rev.D,92:074015(2015);H.Sun and X,Wang,Eur.Phys.J.C,78:281(2018)
32 H.Hesari,H.Khanpour,and M.M.Najafabadi,Phys.Rev.D,92:113012(2015)
33 B.Meli′c,M.Patra,JHEP,1701:048(2017)
34 J.Ren,R.-Q.Xiao,M.Zhou,Y.Fang,H.-J.He,and W.Yao,JHEP,1806:090(2018);Q.Li,Q.-S.Yan,and X.Zhao,Phys.Rev.D,92:014015(2015);M.Kohda,T.Modak,and W.-S,Hou Phys.Lett.B,776:379(2018)
35 A.Alloul,N.D.Christensen,C.Degrande,C.Duhr,and B.Fuks,Comput.Phys.Commun.,185:2250(2014)
36 J.Alwall,R.Frederix,S.Frixione,V.Hirschi,F.Maltoni,O.Mattelaer,H.-S.Shao,T.Stelzer,P.Torrielli,and M.Zaro,JHEP,1407:079(2014)
37 R.D.Ball et al(NNPDF Collaboration),Nucl.Phys.B,867:244(2013);R.D.Ball et al(NNPDF Collaboration),JHEP,1504:040(2015)
38 T.Sjostrand,S.Mrenna,and P.Z.Skands,JHEP,0605:026(2006)
39 J.de Favereau et al(DELPHES 3 Collaboration),JHEP,1402:057(2014)
40 R.Frederix and S.Frixione,JHEP,1212:061(2012)
41 E.Conte,B.Fuks,and G.Serret,Comput.Phys.Commun.,184:222(2013)
42 B.Jager,C.Oleari,and D.Zeppenfeld,Phys.Rev.D,80:034022(2009);T.Melia,K.Melnikov,R.Rontsch,and G.Zanderighi,JHEP,1012:053(2010);T.Melia,P.Nason,R.Rontsch,and G.Zanderighi,Eur.Phys.J.C,71:1670(2011)
43 J.M.Campbell and R.K.Ellis,JHEP,1207:052(2012)
44 A.Kardos,Z.Trocsanyi,and C.Papadopoulos,Phys.Rev.D,85:054015(2012)
45 M.Czakon,P.Fiedler,and A.Mitov,Phys.Rev.Lett.,110:252004(2013)
46 A.M Sirunyan et al(CMS Collaboration),Eur.Phys.J.C,77:578(2017)
47 V.Khachatryan et al(CMS Collaboration),Eur.Phys.J.C,74:3060(2014)
48 G.Cowan,K.Cranmer,E.Gross,and O.Vitells,Eur.Phys.J.C,71:1554(2011);[Erratum-ibid.C 73:2501(2013)]
49 J.J.Zhang,C.S.Li,J.Gao,H.Zhang,Z.Li,C.-P.Yuan,and T.-C.Yuan,Phys.Rev.Lett.,102:072001(2009);J.Drobnak,S.Fajfer,and J.F.Kamenik,Phys.Rev.Lett.,104:252001(2010);C.Zhang and F.Maltoni,Phys.Rev.D,88:054005(2013)
50 C.Patrignani et al(Particle Data Group),Chin.Phys.C,40:100001(2016)
51 K.Agashe et al(Top Quark Working Group Collaboration),arXiv:1311.2028[hep-ph]
2 C.S.Li,R.J.Oakes,and J.M.Yang,Phys.Rev.D,49:293(1994);J.L.Diaz-Cruz,H.-J.He,and C.-P.Yuan,Phys.Lett.B,179:530(2002);J.J.Liu,C.S.Li,L.L.Yang,and L.G.Jin,Phys.Lett.B,599:92(2004);J.Cao,C.Han,L.Wu,J.M.Yang,and M.Zhang,Eur.Phys.J.C,74:3058(2014);T.-J.Gao,T.-F.Feng,F.Sun,H.-B.Zhang,and S.-M.Zhao,Chin.Phys.C,39:073101(2015)
3 G.Eilam,A.Gemintern,T.Han,J.M.Yang,and X.Zhang,Phys.Lett.B,510:227(2001)
4 H.-J.He,S.Kanemura,and C.-P.Yuan,Phys.Rev.Lett.,89:101803(2002);H.-J.He and C.-P.Yuan,Phys.Rev.Lett.,83:28(1999);S.Bejar,J.Guasch,and J.Sola,Nucl.Phys.B,600:21(2001);T.Han and R.Ruiz,Phys.Rev.D,89:074045(2014);K.-F.Chen,W.-S.Hou,C.Kao,and M.Kohda,Phys.Lett.B,725:378(2013);C.Kao,H.-Y.Cheng,W.-S.Hou,and J.Sayre,Phys.Lett.B,716:225(2012);G.Abbas,A.Celis,X.-Q.Li,J.Lu,and A.Pich,JHEP,1506:005(2015);F.J.Botella,G.C.Branco,M.Nebot,and M.N.Rebelo,Eur.Phys.J.C,76:161(2016)
5 B.Yang,N.Liu,and J.Han,Phys.Rev.D,89:034020(2014)
6 A.Azatov,M.Toharia,and L.Zhu,Phys.Rev.D,80:035016(2009)
7 M.Beneke,I.Efthymiopoulos,M.L.Mangano et al,hepph/0003033;T.M.P.Tait,and C.-P.Yuan,Phys.Rev.D,63:014018(2000);Q.-H.Cao,J.Wudka,and C.-P.Yuan,Phys.Lett.B,658:50(2007)
8 J.A.Aguilar-Saavedra and G.C.Branco,Phys.Lett.B,495:347(2000);H.-J.He,T.M.P.Tait,and C.-P.Yuan,Phys.Rev.D,62:011702(2000);F.Maltoni,K.Paul,T.Stelzer,and S.Willenbrock,Phys.Rev.D,64:094023(2001)
9 D.Lopez-Val,J.Guasch,and J.Sola,JHEP,0712:054(2007);W.Bernreuther,J.Phys.G,35:083001(2008);T.Han,Int.J.Mod.Phys.A,23:4107(2008);J.A.Aguilar-Saavedra,Nucl.Phys.B,812:181(2009);J.A.Aguilar-Saavedra,Nucl.Phys.B,821:215(2009)
10 C.S.Li,H.T.Li,and D.Y.Shao,Chin.Sci.Bull.,59:3709(2014);C.Zhang and S.Willenbrock,Phys.Rev.D,83:034006(2011)
11 A.Kobakhidze,L.Wu,and J.Yue,JHEP,1410:100(2014);E.L.Berger,Q.-H.Cao,C.-R.Chen,C.S.Li,and H.Zhang,Phys.Rev.Lett.,106:201801(2011);D.Atwood,S.K.Gupta,and A.Soni,JHEP,1410:057(2014)
12 Y.Wang,F.P.Huang,C.S.Li,B.H.Li,D.Y.Shao,and J.Wang,Phys.Rev.D,86:094014(2012)
13 A.Greljo,J.F.Kamenik,and J.Kopp,JHEP,1407:046(2014)
14 X.Chen and L.-G.Xia,Phys.Rev.D,93:113010(2016)
15 S.Khatibi and M.M.Najafabadi,Phys.Rev.D,89:054011(2014)
16 K.Chao,H.-Y.Cheng,W.-S.Hou,and J.Sayre,Phys.Lett.B,716:225(2012);C.Degrande,J.-M.Gerard,C.Grojean,F.Maltoni,and G.Servant,Phys.Lett.B,703:306(2011)
17 V.Khachatryan et al(CMS Collaboration),JHEP,1702:079(2017)
18 G.Aad et al(ATLAS Collaboration),JHEP,1512:061(2015)
19 M.Aanoud et al(ATLAS Collaboration),JHEP,1710:129(2017)
20 A.M Sirunyan et al(CMS Collaboration),JHEP,1806:102(2018)
21 M.Aanoud et al(ATLAS Collaboration),Phys.Rev.D,98:032002(2018)
22 J.I.Aranda,A.Cordero-Cid,F.Ramirez-Zavaleta,J.J.Toscano,and E.S.Tututi,Phys.Rev.D,81:(2010)077701.
23 F.Larios,R.Martinez,and M.A.Perez,Phys.Rev.D,72:057504(2005)
24 ATLAS Collaboration,ATL-PHYS-PUB-2013-012;ATL-PHYS-PUB-2016-019
25 J.A.Aguilar-Saavedra,Acta Phys.Polon.B,35:2695(2004);J.M.Yang,Annals Phys.316:529(2005);F.Larios,R.Martinez,and M.A.Perez,Int.J.Mod.Phys.A,21:3473(2006);P.M.Ferreira,R.B.Guedes,and R.Santos,Phys.Rev.D,77:114008(2008)
26 N.Craig,J.A.Evans,R.Gray et al,Phys.Rev.D,86:075002(2012)
27 C.Degrande,F.Maltoni,J.Wang,and C.Zhang,Phys.Rev.D,91:034024(2015);G.Durieux,F.Maltoni,and C.Zhang,Phys.Rev.D,91:074017(2015);V.Cirigliano,W.Dekens,J.de Vries,and E.Mereghetti,Phys.Rev.D,94:034031(2016)
28 Y.-B.Liu and Z.-J.Xiao,Phys.Lett.B,763:(2016)458.
29 Y.-B.Liu and Z.-J.Xiao,Phys.Rev.D,94:054018(2016)
30 Lei Wu,JHEP,1502:061(2015)
31 W.Liu,H.Sun,X.Wang,and X.Luo,Phys.Rev.D,92:074015(2015);H.Sun and X,Wang,Eur.Phys.J.C,78:281(2018)
32 H.Hesari,H.Khanpour,and M.M.Najafabadi,Phys.Rev.D,92:113012(2015)
33 B.Meli′c,M.Patra,JHEP,1701:048(2017)
34 J.Ren,R.-Q.Xiao,M.Zhou,Y.Fang,H.-J.He,and W.Yao,JHEP,1806:090(2018);Q.Li,Q.-S.Yan,and X.Zhao,Phys.Rev.D,92:014015(2015);M.Kohda,T.Modak,and W.-S,Hou Phys.Lett.B,776:379(2018)
35 A.Alloul,N.D.Christensen,C.Degrande,C.Duhr,and B.Fuks,Comput.Phys.Commun.,185:2250(2014)
36 J.Alwall,R.Frederix,S.Frixione,V.Hirschi,F.Maltoni,O.Mattelaer,H.-S.Shao,T.Stelzer,P.Torrielli,and M.Zaro,JHEP,1407:079(2014)
37 R.D.Ball et al(NNPDF Collaboration),Nucl.Phys.B,867:244(2013);R.D.Ball et al(NNPDF Collaboration),JHEP,1504:040(2015)
38 T.Sjostrand,S.Mrenna,and P.Z.Skands,JHEP,0605:026(2006)
39 J.de Favereau et al(DELPHES 3 Collaboration),JHEP,1402:057(2014)
40 R.Frederix and S.Frixione,JHEP,1212:061(2012)
41 E.Conte,B.Fuks,and G.Serret,Comput.Phys.Commun.,184:222(2013)
42 B.Jager,C.Oleari,and D.Zeppenfeld,Phys.Rev.D,80:034022(2009);T.Melia,K.Melnikov,R.Rontsch,and G.Zanderighi,JHEP,1012:053(2010);T.Melia,P.Nason,R.Rontsch,and G.Zanderighi,Eur.Phys.J.C,71:1670(2011)
43 J.M.Campbell and R.K.Ellis,JHEP,1207:052(2012)
44 A.Kardos,Z.Trocsanyi,and C.Papadopoulos,Phys.Rev.D,85:054015(2012)
45 M.Czakon,P.Fiedler,and A.Mitov,Phys.Rev.Lett.,110:252004(2013)
46 A.M Sirunyan et al(CMS Collaboration),Eur.Phys.J.C,77:578(2017)
47 V.Khachatryan et al(CMS Collaboration),Eur.Phys.J.C,74:3060(2014)
48 G.Cowan,K.Cranmer,E.Gross,and O.Vitells,Eur.Phys.J.C,71:1554(2011);[Erratum-ibid.C 73:2501(2013)]
49 J.J.Zhang,C.S.Li,J.Gao,H.Zhang,Z.Li,C.-P.Yuan,and T.-C.Yuan,Phys.Rev.Lett.,102:072001(2009);J.Drobnak,S.Fajfer,and J.F.Kamenik,Phys.Rev.Lett.,104:252001(2010);C.Zhang and F.Maltoni,Phys.Rev.D,88:054005(2013)
50 C.Patrignani et al(Particle Data Group),Chin.Phys.C,40:100001(2016)
51 K.Agashe et al(Top Quark Working Group Collaboration),arXiv:1311.2028[hep-ph]